Oct. 9, 1991: Settlement among state of Alaska, U.S. government and Exxon approved by federal judge. Exxon paid $25 million to environmental groups; $50 million apiece to the state and federal governments; and $900 million to restore wildlife populations and habitat

1992: Cleanup operation ends, at a cost of $2.2 billion

1993:Gross earnings for salmon fishers using purse seines in Prince William Sound bottom out at $1.7 million -- a drop of 95 percent from 1988.